Unloading apparatus.



T. H. DONOVAN.

UNLOADING APPARATUS.

APPLICATION FILED MAB. 5, 191a.

Patented Apr. 21, 191i 2 SHEETS-SHEET 1.

' away/701a 7/7. 00/70 r0 WITNESSES A ltarnzy COLUMBIA PLANOGRAPHCO.,WASHINGTON, D, C.

. D O N OVAN UNLOADING APPARATUS.

APPLICATION FILED MAR. 5, 1913.

Patented Apr. 21, 19M

2 SHEETS-SHEET 2.

A Home COLUMBIA PLANOGRAPH co WASHINGTON, D c.

Cit

' TED STATES PATENT OFFICE.

TIMOTHY HAYES DONOVAN, OF RAYMOND, WASHINGTON, ASSIGNOR OF ONE-HALF TORALPH GERBER, OF RAYMOND, WASHINGTON.

UNLOADING APPARATUS.

To all whom it may concern Be it known that I, TIMOTHY H. DONOVAN, acitizen of the United States, residing at Raymond, in the county ofPacific and State of Viashington, have invented certain new and usefulImprovements in Unloading Apparatus, of which the following is aspecification. 7

The apparatus which is the subject of the present invention is designedfor unloading logs from logging cars, and its object is to provide anapparatus which is rapid in operation and which can be controlledwithout danger of injury to the operator.

The apparatus consists in a horizontal sweep which is so located withrespect to the car that its arms swing in an arc cross ing the car, sothat when the free end of one of said arms is placed against the loadand the car is moved forward, the load is pushed laterally off the car.

in order that the invention may be better understood, reference is hadto the accompanying drawings in which-- Figure 1 is an elevation of theapparatus; Fig. 2 is a plan view thereof, and Fig. 3 is a verticalsection on the line33 of Fig. 2.

Referring specifically to the drawings, 5 denotes a piling arranged in asquare and braced on the top by planks 6, and on the sides by planks 7.In the center of the piling is an upright post 8 firmly secured to thepiles 5 by suitable braces 9. The post and piles are securely anchoredby being driven into the ground a suitable distance.

Pivotally suspended from the top of the post- 8 is a four-armedrevolving sweep, the arms 10 of which are horizontal and swing in ahorizontal plane. 'The arms are rigidly connected at their inner ends byangleplates 11, said ends being spaced from the post 8. The arms arealso connected by diagonal brace rods 12, one of which latter isprovided with a turnbuckle 13. The arms are further braced and supportedfrom the top of the post 8 by means of crossed plates 14- and rods 15extending from the latter and through stirrups 16 at the top and bottomof the arms adjacent to the inner ends thereof. The arms 10 areconnected in pairs by means of cables 17 secured to the arms near theirouter or free ends. On the top plate 14 are firmly mounted two pulleys18 arranged at right angles to each other and one above the other, overwhich pulleys the Specification of Letters Patent.

Application filed March 5, 1913.

Patented Apr. 21, 1914.

Serial No. 752,132.

cables pass. The arms are thus connected in palrs the members of whichare diametrically opposite each other. One of the cables passes over oneof the pulleys, and the other cable passes over the other pulley.

I At the top of the post 8 is a cap 19 having 1t-s upper surfaceslightly convex. Between the cap and the bottom plate 14 may be placed awear plate 20.

In the top of the post 8 is embedded a p vot 21 on which the sweepturns, which pivot passes through the cap 19 and rises a suflicientdistance therefrom so that it may pass through the plate 20, and thebottom plate 14:, and have a bearing in the top plate 1 1. The sweeploosely encircles the post 8, and the arms 10 are thus allowed a limitedup and down motion as indicated by dotted llnes in Fig. 1. Asemi-circular buffer 22 is removably attached to one side of the post 8.

Around the outer end of each arm 10 is attached, by bolts 23 and a strap24, a plate 25 extending across the end of the arm and having thereat aseries of sharp points 26 to engage the logs to be unloaded. Each arm 10is provided near its outer end with a suitable handle 27 to facilitatethe adjustment of the arm into operative position.

The herein-described apparatus is located adjacent to one side of thetrack 28 on which the cars 29 to be unloaded stand, and the length ofthe sweep-arms 10 is such that their free ends swing in an arc crossingthe car.

The operation of the apparatus is as fol lows: A car of logs is pushedover the track when one of the sweep-arms 10 extends at an acute angleto the track, as shown by dotted lines in Fig. 2. The operator stands'on one side of the track grasping the handle 27, and at some suitablepoint on the side of the log nearest to him he pushes the arm over andengages the points 26 with the log. As the car moves on the arm swingsaround, and the end which engages the log swings in an arc crossing thecar so'that the logs are pushed off the car laterally, in a lineapproximately parallel to the track, and fall into the boom below. Theforward movement of the car brings the next sweep-arm in position tounload the next car, and so on until the entire train of cars has beenunloaded. When the sweeparm is at a right angle to the track it extendsentirely across the car so that it clears the latter of any logsinclined to stick.

The apparatus affords absolute safety to the operator and it is rapid inoperation. The vertical motion of the sweep-arms hereinbefore describedallows the operator greater liberty of action in choosing the properplace of engagement with the log. The apparatus also prevents damage tothe cars, the steady pushingmotion preventing the fall of the top logson the edge of the car. By connecting the sweep-arms in pairs thevertical adjustment thereof to engage the log is rendered easy as thearm which is to be adjusted is balanced by its connection through thecable 17 with the diametrically opposite arm.

I claim:

1. An apparatus for unloading vehicles comprising a verticallyadjustable horizontal sweep-arm engageable at its outer end with oneside of the load, and mounted to swing in an are crossing the vehicle.

2'. An apparatus for unloading vehicles comprising a pivoted sweephaving diametrically opposite horizontal arms mounted to swing in an arecrossing the vehicle and successively engageable at theirouter ends withone side of the load.

3. An apparatus for unloading vehicles comprising horizontal sweep-armsengageable with the load on one side thereof and mounted to swing in anare crossing the vehicle, said arms being vertically adjustable andconnected in diametrically opposite pairs to balance each other.

4. An apparatus for unloading vehicles comprising a post, a sweeppivotally suspended from the top of the post, said sweep havinghorizontal arms mounted to swing in an are crossing the vehicle, andsaid arms being loose to permit vertical adjustment at their free ends,pulleys mounted at the top of the post, and cables passing over saidpulleys, and connecting diametrically opposite ones of the arms.

An apparatus for unloading vehicles comprising a post, a supportpivotally mounted at the top of the post, horizontal sweep-arms fastenedtogether and suspended from the aforesaid support, pulleys car ried bythe support, and cables passing over said pulleys and connectingdiametrically opposite ones of the arms.

6. An apparatus for unloading vehicles comprising a post, a supportpivotally mounted at the top of the post, horizontal sweep-arms fastenedtogether, suspension means connecting the inner ends of the arms to thesupport, and suspension means between the support and the outer ends ofthe arms.

7. An apparatus for unloading vehicles comprising a post, a supportpivotally mounted at the top of the post, horizontal sweep-arms fastenedtogether, suspension means connecting the inner ends of the arms to thesupport, pulleys carried by the support, and cables passing over saidpulleys and connected to diametrically opposite ones of the arms at theouter ends thereof.

In testimony whereof I affix my signature in presence of two witnesses.

TIMOTHY HAYES DONOVAN.

Witnesses C. YV. REED, R. GERBER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

